%0 Journal Article
%A Ruffle, B.
%A Ayrinhac, S.
%A Courtens, E.
%A Vacher, R.
%A Foret, M.
%A Wischnewski, A.
%A Buchenau, U.
%T Scaling the temperature-dependent boson peak of vitreous silica with the high-frequency bulk modulus derived from Brillouin scattering data
%J Physical review letters
%V 104
%@ 0031-9007
%C College Park, Md.
%I APS
%M PreJuSER-10522
%P 067402
%D 2010
%Z Record converted from VDB: 12.11.2012
%X The position and strength of the boson peak in silica glass vary considerably with temperature T. Such variations cannot be explained solely with changes in the Debye energy. New Brillouin-scattering measurements are presented which allow determining the T dependence of unrelaxed acoustic velocities. Using a velocity based on the bulk modulus, scaling exponents are found which agree with the soft-potential model. The unrelaxed bulk modulus thus appears to be a good measure for the structural evolution of silica with T and to set the energy scale for the soft potentials.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000274445100047
%R 10.1103/PhysRevLett.104.067402
%U https://juser.fz-juelich.de/record/10522